It really depends on what you're looking for, most management companies that allow a short term lease as that, rent will be significantly more than a 12 m lease. In addition you can always rent furniture for a monthly fee as well. There are some condo owners that allow short term for their own furnished units. You may have better luck on CL because owners won't pay agents for finding a place that would be rented out for such a short period of time. Look into extended stay hotels or apartments , meant for corporate settings , to get a decent monthly rent.